ТОЛЬКО ВСТАВКИ When Alex (hang up) the phone he (realise) he (forget) to take down the caller’s name and number.

He (work) in the laboratory for three hours when he stopped for a break.
had painted

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Alex (read) a book all night and was very sleepy the next morning.

They were exhausted because they (play) chess all day.

I (decide) that I was going to study Chemistry before I finished secondary school.

Alexander (already/learn) to read and write before he started school.

He (reach) his house by the time it started to rain.

1)What size is the Earth? (  It is very, very big. )
2) Is there a lot of water on the Earth? ( Yes, there is. There is a lot of water on the Earth.It is in rivers, lakes, seas and oceans.)
3)There are a lot of forests and fields, hills and mountains on it, aren`t there? (Yes, there are.)
4) What is full of wonders? ( The Earth is.)
5) Do different animals live on the Earth or on the Mars? ( They live on the Erath.)
6) Are there any countries on the Erath?  (Yes, there are. There are a lot of countries.)
7) What countries are threre? (  There are warm countries and cold countries. There are some countries where there are four seasons in a year and some countries where there are only two.)
8) Do people live in different countries and speak different languages?  (Yes, they do)

1. People live on the Earth
2. The Earth is big
3. не знаю
4. In oceans, lakes, rivers, seas
5. On The Earth there a seven oceans
6. On the earth there are 4 million hectares of the woods
7. не знаю
8. Yes, it is.
9. Because she's a big, spacious. She has a water and air, beautifull sunset and sunrise, many animals,birds and others.
10. Becuse this information can be seen on TV
11. I don't know
12. When the day
13. When the night
15. Of course, she has a 251 countrys
16. The most popular language is English. 
17. I live in ... (город в котором ты живешь). Russia is the largest country in the world